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A topological framework for modeling belief revision
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: Classical formulations model belief revision as a deterministic process. Under certain circumstances, the process may have more than one outcome, which suggests that belief revision is non-deterministi ... -
Contributions to centralizers in matrix rings
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: THE concept of a k-matrix in the full 2 2 matrix ring M2(R=hki), where R is an arbitrary unique factorization domain (UFD) and k is an arbitrary nonzero nonunit in R, is introduced. We obtain a concrete ...